]> 2026-04-13T19:30:31+00:00 Case study:River Calder Large Wood Structure installation 500 en 200819 SmcK LWS W end.mp4 Full project report 4 min Video produced by Scotland; the Big Picture Oct 2020 Approved Yes No Yes No No Improvement No Yes Fish,Yes,Yes,No,Yes,No,Improvement Invertebrates,Yes,No,Yes,Yes,No, ,No,No,No,No,No, Fish Invertebrates Yes No Installation of Large Wood Structures Spey Fishery Board SEPA Pitmain and Glenbanchor Estates Cluny Estate SEPA Yes No Yes No Yes No Yes Channel pattern/planform,Yes,No,Yes,No,No, Substrate conditions,Yes,No,Yes,No,No, Channel pattern/planform Substrate conditions No 1 - 10 k€ Spey Catchment Initiative Spey Catchment Initiative 57.064429316064,-4.1702433888807 Penny Lawson Penny Lawson ,,Installation of Large Wood Structures ,,, Spey Catchment Initiative Baseline monitoring already carried out includes ground-based and aerial photographic surveys, timelapse photography of one LWS, drone topographic survey, macro-invertebrate survey, electro-fishing and salmonid redd counts. Water temperature loggers have been installed upstream and downstream of the project reach. The surveys will be repeated at appropriate intervals. The redd survey done in November 2020 revealed new salmon redds associated with 12 of the structures - a very promising early result. 26204 Spey Fishery Board, SEPA, Pitmain and Glenbanchor Estates, Cluny Estate Installing LWS at the upstream end of the project reach. Spey Catchment Initiative MHA 1005565.jpg 2019-01-10Z 2458493.5 Complete With funding from the Scottish Environment Protection Agency (SEPA), the Spey Catchment Initiative took measures to improve habitat for fish and other aquatic biodiversity in the River Calder near Newtonmore. Poor salmonid juvenile productivity had been linked to sub-optimal substrate and sediment processes. As there is very little riparian woodland along the river, Large Wood Structures (LWS) were installed to mimic natural dead wood and kickstart hydro-morphological processes to increase natural erosion and deposition, encouraging formation of higher quality, more diverse habitats in the channel and potentially providing water quality enhancements. During August 2020 a total of 29 structures formed from locally harvested, whole trees from a nearby windblown plantation, were secured into the river bed or banks at carefully chosen locations along approximately 1.6 km of the Calder. Medial and bar apex structures were constructed where the river was showing signs of partially formed features. Cbec eco-engineering were contracted to do the initial survey and design, and local contractors G Campbell did the groundworks. To make the improvements sustainable in the long term, the Spey Catchment Initiative is also creating over 22ha of new riparian woodland covering both banks and encompassing the LWS reach and an area further upstream. Low density planting of native species and anticipated regeneration will hopefully ensure an on-going natural source of dead wood input, as well as providing habitat and NFM benefits. River Calder Large Wood Structure installation river calder large wood structure installation 1600 River Spey Scotland RBD Calder calder Spey Catchment Initiative 100 - 1000 km² 200 - 500 m Calder (Spey) Fisheries Flood risk management Habitat and biodiversity Hydromorphology 10 - 50 k€ 1 - 10 k€ Spey Catchment Initiative 2020-12-22T11:50:15Z 2459205.9932292 2021-01-29T12:12:11Z 2459244.0084607 River Calder Large Wood Structure installation 500 1 plainlist 5 [[Category:Case study]] [[Project title::!River Calder Large Wood Structure installation]] [[Subcatchment title::Calder (Spey)]] River Calder Large Wood Structure installation# QUERY32cb9ec8ef06c5c6d338ace2f168f580